What Is Better A Plastic Or Fiberglass Septic Tank? (Perfect answer)

But, to break it down quickly, concrete septic tanks are good for sturdiness and longevity. Plastic septic tanks (fiberglass, too) weigh far less and therefore installation is easier and less expensive.

  • If compared to plastic septic tank, fiberglass septic tank is more durable while when compared to concrete septic tank, concrete can last longer but performs but cannot perform better than fiberglass as it is not an impervious material. Groundwater can seep all throughout on concrete if not well constructed.

What is best material for septic tank?

The best choice is a precast concrete septic tank. Precast septic tanks hold many advantages over plastic, steel, or fiberglass tanks. This is why so many cities and towns actually require the use of concrete septic tanks.

How long will a fiberglass septic tank last?

Fiberglass Septic Tank Cost Depending on the construction methods, the condition of the soil, and the materials used while manufacturing, a fiberglass tank can last as long as twenty to thirty years.

What kind of septic tank lasts the longest?

Concrete septic tanks have the longest lifespan out of any septic tank material. While they are more expensive and sometimes difficult to install, it is for a good reason. A properly designed and installed concrete septic tank can last for anywhere from 40 years and beyond.

How long does plastic septic tank last?

A septic tank can last between 20 and 40 years. The lifespan depends on the tank’s material. A steel tank lasts 20 years, while a concrete tank lasts 40 years. Plastic tanks can last as long as 30 years.

Do plastic septic tanks collapse?

Guide to Plastic or Fiberglass Septic Tanks Fiberglass or Plastic Septic Tanks: are very resistant to some of the problems occurring with concrete (cracks) or steel (rust) septic or home made (collapse) septic tanks.

Which type of septic tank is good?

1. Concrete Septic Tank. Concrete septic tanks are massive and are generally pre-casted for easy installation. These precast concrete tanks have specific gravity around 2.40, which makes it strong to withstand the buoyant forces when placed in the ground.

Which is better concrete or fiberglass septic tank?

While concrete is known for its durability, fiberglass septic tanks are even more durable. Once buried, fiberglass tanks become completely inert. Unlike concrete, it won’t degrade, rust, or weaken. Fiberglass septic tanks also require less maintenance than concrete septic tanks do.

How can I make my septic tank last longer?

How to Keep Your Septic System Healthy

  1. How the Septic System Works.
  2. Don’t Overload the Septic Tank and Drain field.
  3. Use an Efficient Toilet.
  4. Don’t Treat the Toilet as a Garbage Disposal.
  5. Don’t Pour Grease Down the Drain.
  6. Divert Rain Water From the Septic Drain Field.
  7. Keep Trees Away from the Septic System.

Is baking soda good for septic tanks?

Will baking soda hurt a septic system? Baking soda and other common household solutions such as vinegar are not harmful to your septic system. Harsh chemicals such as bleach and ammonia can disrupt the good bacteria in your septic tank and should not be used as part of a septic treatment.

Are plastic septic tanks good?

Plastic septic tanks are watertight and are immune to water-based corrosion. They are also rust-resistant. Plastic tanks are less prone to cracking since plastic is flexible, and thus a plastic septic tank does not crack as much as a cement septic tank. Plastic septic tanks are more hygienic than cement tanks.

How often should a septic tank be replaced?

Typical lifespan is in excess of 30 years for GRP, PE and concrete tanks. Assuming optimal conditions of install and use, you could expect the following: Steel septic tanks have a life expectancy of 15 to 20 years.

How often should I clean my septic tank?

Inspect and Pump Frequently The average household septic system should be inspected at least every three years by a septic service professional. Household septic tanks are typically pumped every three to five years.

How big of a septic tank do I need for a 3 bedroom house?

The correct size of the septic tank depends mostly on the square footage of the house and the number of people living there. Most residential septic tanks range in size from 750 gallons to 1,250 gallons. An average 3-bedroom home, less than 2500 square feet will probably require a 1000 gallon tank.

How deep can you bury a plastic septic tank?

The general rule of thumb is that most septic tanks can be buried anywhere from four inches to four feet underground.

Should bath water go into septic tank?

In MOST household septic systems, yes. Probably 98%+ of septic systems receive all of the waste water from the house – tub, shower, sinks, washing machine, dishwasher, etc.

Septic Tanks – Fibreglass Versus Plastic

Fibreglass is rigid and does not bend. The main problem with many plastic tanks is that they are not sturdy enough, and if the groundwater level is greater than the tank’s base when it is emptied, the tank will deform and become unfit for function. Because groundwater pressures can be quite high, some distort even when completely full. As they bend, always inwards, the volume of the device is substantially decreased, rendering it unable to function correctly. Lids are no longer a good fit. In addition, drain connections snap off, forcing drain spigots to bend downward, causing the drains to lose their gradient and the system to “back-up.” Both chambers can overflow into each other when the internal baffle walls become disconnected from the walls of the other chamber.

In the photograph below, you can see the deformation that can occur when low-quality plastic systems are put in moist ground conditions.

In this yard, there were 50 old septic tanks that had been scrapped.

MDPE was never meant to be used for subterranean installations, yet it is quite inexpensive to purchase and install.

  1. By immersing the septic tank in a pool, you will not be able to determine its strength.
  2. Groundwater is unable to do so because it is trapped by the weight and density of the earth above it, resulting in a huge rise in pressure.
  3. Because concrete is not watertight, groundwater works its way through the concrete and bends the tank regardless of how well it is constructed.
  4. The only safe approach to install a plastic septic tank, according to our expertise, is to construct a watertight chamber for the tank to be placed in.
  5. Any other technique of installing a plastic septic tank runs the danger of distorting it, but this operation is quite costly.

This premium one-piece fibreglass structure comes with a 25-year guarantee and is built to last. The Class 1Crystal Septic Tankoption may be erected with a gravel backfill, even in places with high groundwater levels, without the risk of deformation or cracking, according to the manufacturer.

Plastic Sewage Treatment Plant Tanks

The EN12566-3 Tank Strength Test is only required for the CRUSH strength and is not required for any other strength. When the tank is subjected to this test, it is weighted on top with increasing weight until it collapses. This test does not accurately simulate the impacts of groundwater since groundwater exerts pressure from all directions, including from the tank’s base and the tank’s sidewalls. Although there is an EN12566-3 test for groundwater pressure resistance – the WET PIT TEST – unfortunately, this test is OPTIONAL, and many manufacturers, particularly those who are unsure about their tanks, prefer to forego this crucial test!

The tank is covered in gravel and water is pushed into the gravel to simulate groundwater pressures.

Some tank manufacturers claim that their tank has passed a wet pit test even if it has only been partially submerged in water throughout the testing process.

This does not meet our standards, in our opinion.

  • Is the tank in possession of an EN12566-3 Wet Pit Certificate? What was the depth of the water surrounding the tank? How long was the tank subjected to testing?

Because you have no way of knowing what your groundwater will do to the tank, don’t buy their wastewater treatment plant if they refuse to inform you. In order to serve as an example, the VORTEX sewage treatment facility has been awarded the Wet Pit Certificate. Over a three-week period, it was immersed in groundwater to a level above the entrance pipe (the water level was just 300mm below ground level).

Which Septic Tank Material Should You Use?

Receive articles, stories, and videos about septic tanks delivered directly to your email! Now is the time to sign up. Septic Tanks and More Receive Notifications Many different types of materials have been utilized to create septic tanks over the course of history. The following materials are most frequently used in the construction of septic tanks: 1. Resin made of polyethylene and polypropylene The use of fiberglass-reinforced plastic is another option. Precast concrete is a third option. Tanks made of precast concrete have traditionally been used for on-site water storage.

The use of tanks made of fiberglass reinforced plastic (FRP) and polyethylene is becoming more popular.


Receive articles, stories, and videos about septic tanks delivered directly to your email!. Make your registration right now. Sewage Treatment Plants Plus Receive Notifications. Septic tanks have been constructed from a variety of materials throughout history. The following materials are most frequently used in the construction of sewage treatment systems: resins made of polyethylene and polypropylene The second type of reinforced plastic is fiberglass. Precast concrete is a third option for construction.

Therefore, compared to tanks built of other materials, there is a wealth of information available about concrete tanks. More and more people are opting for tanks made of fiberglass or polyethylene. In the following sections, we will analyze the pros and cons of various tank materials.


  • Installation is simplified by the fact that poly tanks are lighter than concrete, which is advantageous on difficult-to-access sites. No rust or corrosion, and they are resistant to the chemicals and gases found in sewage and soil, allowing them to last for a longer period of time than other materials. Contractors may deliver themselves, eliminating the need for a boom truck or the need to wait for delivery. The design minimizes the number of seams and joints that may leak
  • Economical


  • Because of their low weight, steel tanks are more likely than concrete tanks to float out of the ground in locations with high water tables. Larger capacity are not normally offered
  • Nonetheless, Typically only available in a limited number of different sizes
  • Typically, there is no rating for traffic
  • Have a restricted depth of burying (often 4 feet, but verify with the manufacturer for exact depth)
  • Some brands must have water or wastewater in them at all times
  • Others do not. In order to assure structural integrity, certain installation criteria must be followed.

Fiberglass Reinforced Plastic (FRP)

Some fiberglass tanks are built as a single piece. Others are manufactured in two pieces by the use of an injection molding technique. Structure soundness and watertightness are both dependent on the use of high-quality raw materials and the strict adherence to production standards, as previously indicated. FRP tanks may leak as a consequence of shipping damage, a faulty batch of glue, uneven application of adhesive, or tension imposed on the midseam during installation, however this is not typical.

  1. The assembling procedure must be meticulously carried out to ensure that the joint does not leak or split.
  2. While the glue is curing, the bolts are mostly employed to keep the pieces together while the adhesive cures.
  3. Pipe penetrations and access riser joints, just like with tanks composed of other materials, must be carefully sealed to ensure that they do not leak and cause damage.
  4. If joints are not watertight, the functioning of the tank is significantly diminished owing to the greater danger of water invading the tank.


  • The tanks are less heavy than concrete tanks, which might be advantageous in difficult-to-reach locations. They are not susceptible to rust or corrosion, and they are resistant to the chemicals and gases found in sewage and soil. Larger capacity options are available. It is possible to build for a deeper burial and to have a traffic rating


  • Because of their low weight, steel tanks are more likely than concrete tanks to float out of the ground in locations with high water tables. In order to assure structural integrity, certain installation criteria must be followed. When compared to concrete and polyethylene tanks, steel tanks might be less cost-effective. Typically only available in a limited number of different sizes


Precast septic tanks are normally made in two sections, with a seam either at the lid or in the middle of the tank’s body. Blended compounds, such as butyl rubber-based or asphalt-based (bituminous) sealants, are commonly used to seal precast tanks that are made of several pieces. It is possible for a leak to occur at the inlet and outlet pipe penetrations, particularly if the tank or piping settles or moves as a consequence of faulty bedding or installation. Mechanically sealing these connections to the tank is essential to ensure that they are both waterproof and flexible.

  1. Rubber boot seals are particularly attractive since they are flexible and maintain a seal even after backfilling and settling has taken place.
  2. Steel reinforcement is employed in accordance with the tank design to offer additional structural capacity during handling, installation, testing, and operation of the tank, among other things.
  3. The compartment walls are normally cast in one piece with the tank, similar to how the tank is constructed.
  4. When it comes to horizontal joints, preformed flexible joint sealants consisting of butyl rubber or asphalt-based compounds are utilized to seal them.
  5. These connections should be made with cast-in, waterproof, flexible resilient connectors that allow the tank and pipe to move freely without the chance of a leak forming between them.

As with other tank materials, it is critical that the tank be waterproof, and in-field verification at the time of installation may be accomplished quickly and simply using proper techniques. Additionally, precast tanks may typically accommodate extra components such as ATUs or pumps.


  • In most cases, precast septic tanks are produced in two sections, with a seam at the lid or a seam in the middle. Blended compounds, such as butyl rubber-based or asphalt-based (bituminous) sealants, are commonly used to seal precast tanks that are made up of several pieces. Pipe penetrations at the tank’s inlet and outflow are a possible source of leakage, especially if the tank or piping settles or moves as a consequence of incorrect bedding or installation. Mechanically sealing these connections to the tank is essential to ensure that they are both waterproof and versatile. However, while bituminous seals, mastic, and cementitious grout have been utilized for many years, modern flexible gaskets and boot fittings are now available that may be cast in place at the time of tank manufacture and create a far more dependable seal. In particular, rubber boot seals are preferred because they are flexible and maintain a seal during backfilling and settling. A regulated environment is used to construct precast concrete septic tanks, which are made locally. To offer additional structural capacity during handling, installation, testing, and usage, steel reinforcement is employed in accordance with the tank design. Precast septic tanks are typically constructed of two sections. When the tank is cast as a single piece, the compartment walls are often cast as well. A segment of precast concrete or plastic risers can be cast into the lid or fixed and sealed once it has been cast in. Vertical joints are sealed using flexible joint sealants that have been preformed and are comprised of butyl rubber or asphalt-based substance. In order to connect pipes to the tank, it is necessary to use fittings that are specifically developed for this purpose. Ideally, these connections should be made with cast-in, waterproof, flexible robust connectors that allow the tank and pipe to move freely without the chance of leaking occurring. It is possible for joints or connections to leak if they are not properly sealed with the necessary materials and techniques in place. As with other tank materials, it is critical that the tank be waterproof, and in-field testing at the time of installation may be readily accomplished for verification using proper procedures. For example, Additionally, precast tanks may often accommodate extra components such as ATUs and pumps.
See also:  How Much Water Should A Septic Tank Have? (TOP 5 Tips)


  • On sites with restricted access, the weight of the material and the equipment required for placement might be challenging. It is possible for corrosion to occur.

a little about the author Sara Heger, Ph.D., is an engineer, researcher, and lecturer in the Onsite Sewage Treatment Program at the University of Minnesota’s Water Resources Center. She holds a bachelor’s degree in civil engineering and a master’s degree in environmental science. She has presented at several local and national training events on topics such as the design, installation, and administration of septic systems, as well as research in the related field. Her responsibilities include serving as the education chair for the Minnesota Onsite Wastewater Association and the National Onsite Wastewater Recycling Association, as well as serving on the National Science Foundation’s International Committee on Wastewater Treatment Systems.

Heger will respond as soon as possible.

A Short Guide on Fiberglass Septic Tanks (Updated for 2020)

A septic tank is an underground chamber into which wastewater is channeled for basic treatment before being discharged. Typically, these tanks are used to store effluent from household sources, but they are now now being used in businesses and factories to store wastewater that has comparable qualities to that of domestic effluent. Septic tanks are designed such that the liquid flows through the tank while the heavier particles fall to the bottom of the tank. The scum (which is mostly comprised of oil and grease) floats to the surface.

Septic tanks are generally classified into four categories, which are available on the market: Septic tanks made of fiberglass septic tanks made of steel Septic tanks that use aerobic bacteria Septic tanks made of concrete In this blog post, we’ve offered a brief overview of fiberglass tanks and how they work.

What is Fiberglass Septic Tank?

Tanks built of fiberglass, as the name implies, are constructed of fiber or a sort of modified plastic. They are lighter in weight than the other kinds and are resistant to corrosion and breaking when compared to the others. The nicest aspect about these tanks is that they are quite simple to put together. However, there are a few things that you should keep an eye out for while evaluating one: Check for a faulty plastic stopper at the bottom of the tank after you have emptied it to see whether the level of the effluent has dropped too low.


Observe for signs of abnormally low effluent levels as well as the absence of drain plugs.

A gravel-filled tank is used for this test, and water is pumped into the tank to stimulate groundwater pressures as part of it. The manufacturer determines the depth of the tank and the length of time that will be used for the test. The greater the number, the better!

Fiberglass Septic Tank Cost

the size and quality of the material used to construct the tank are the two most important factors affecting the price of a fiberglass septic tank In the United States, the average price is between $1600 and $2000 a month. A fiberglass tank can endure for up to twenty to thirty years, depending on the building methods employed, the state of the soil, and the materials used in the production process, among other factors.

How Does a Fiberglass Septic Tank Work?

Essentially, a septic tank is an underwater sedimentation tank that is used to cleanse wastewater through a process of biological breakdown and drainage. The design of fiberglass tanks is straightforward. It consists of a fiberglass container (often rectangular or spherical in shape) buried underground and sealed against the elements. The tank is connected to the rest of the system by two pipes: an input and an output. It is the input pipe’s responsibility to collect wastewater in the septic tank, whereas it is the outlet pipe’s responsibility to remove the pre-processed wastewater from the septic tank and disperse it evenly across the soil and watercourses.

The top layer is primarily made up of oil and grease, which floats above the rest of the waste and collects water.

The wastewater and waste particles that make up the intermediate layer are collected here.

Bacteria from wastewater break down the solid waste that accumulates inside the tank.

Which is Better Concrete or Fiberglass Septic Tank?

Fiberglass tanks are waterproof and corrosion-resistant, making them ideal for storage. Additionally, they are less heavy than concrete septic tanks. Rather than being lightweight and resistant to corrosion, concrete tanks are hefty and susceptible to corrosion. When compared to concrete septic tanks, lightweight septic tanks are more susceptible to damage during the installation process, according to a recent study. Concrete septic tanks are also significantly more expensive to install and maintain than fiberglass septic tanks, both in terms of installation and maintenance costs.

Additionally, if fiberglass tanks are installed incorrectly, they will frequently float on the ground’s surface.

The most problematic aspect of concrete septic tanks is that they frequently crack when exposed to extremely hot or cold weather.

In addition, when compared to plastic septic tanks, they are more prone to leaking and cracking. To summarize, fiberglass tanks are the most cost-effective option if you’re looking for a tank that will meet your needs while also being affordable.

Advantage and Disadvantage of Fiberglass Septic Tanks

If you’re intending to construct a new septic tank or replace an old one, a fiberglass tank may be an excellent option for you. Here are some of the reasons why you should select it over the alternatives: 1.They are less in weight as compared to steel and concrete tanks, and they may be erected almost anyplace. Large trucks and cranes may be unable to access certain regions, which might be a significant benefit in some cases. 2.They are small enough to be transported in a pickup truck. 3.They are extremely strong and long-lasting.

  • 4.They have a higher resistance to corrosive elements than concrete storage tanks.
  • The roots of plants find it difficult to enter them, in contrast to the situation with concrete tanks.
  • Let’s talk about it!
  • Because these tanks weigh less than concrete tanks, you must take the necessary precautions to ensure that they are properly anchored to the ground before using them.
  • A fiberglass tank that has been correctly constructed and secured can survive for many years without causing you any concern.
  • Keep in mind to share your ideas in the comments area below!
  • Septic tanks made of fiberglass
  • Fiberglass tanks for industrial use
  • Fiberglass septic tanks

Plastic or Fiberglass Septic Tank Condition – How to Inspect Plastic or Fiberglass Septic Tanks

  • FILL IN THE BLANKET WITH YOUR QUESTION OR COMMENTONfiberglass or plastic septic tanks: specific difficulties
  • Inspection
  • Installation
  • Troubleshooting
  • Repairs
  • Age
  • Or durability

InspectAPedia does not allow any form of conflict of interest. The sponsors, goods, and services described on this website are not affiliated with us in any way. Septic tanks made of plastic or fiberglass: This document describes how to inspect the condition of a fiberglass or plastic septic tank, as well as special considerations for inspecting Plastic or Fiberglass septic tanks, as those systems are subject to different stresses, potential failure or damage, and therefore require different inspection procedures.

There isn’t a question concerning septic system inspection processes, faults in onsite waste disposal systems, septic tank problems, septic drainfield problems, checklists of system components, or even what questions to ask in this article series.

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Guide to Plastic or Fiberglass Septic Tanks

Inspection of plastic or fiberglass septic tanks is an important part of the onsite wastewater disposal system’s overall operation. The plastic septic tank seen in this image is courtesy of thenaturalhome, which may be found at the URL provided further down this page. Unlike concrete (cracks) or steel (rust) septic tanks, fiberglass or plastic septic tanks are extremely resistant to some of the difficulties that can arise with these materials, such as home-made (collapse). Septic tanks made of plastic, on the other hand, may require additional considerations, notably during installation and perhaps when the septic tank is being drained out of its plastic or fiberglass casing.

Some items to look out for while evaluating a plastic septic tank or a fiberglass septic tank include the following:

  • When a fiberglass or plastic septic tank is opened for pumping, it is possible to discover that the effluent level has dropped significantly. Examine the tank bottom to determine whether a plastic plug that was originally attached to the tank has been missing after it has been emptied. During the pumping of her septic tank, one of our readers wrote in to tell us that the pumping process itself loosened and removed a blockage from the tank’s bottom. The loss was found some years later, when the tank was reopened for pumping for the first time in several months. The plug was reinstalled once it had been cleaned. In any case, do not enter a sewer tank for any purpose, including removing a plug unless you are properly educated, equipped with the necessary breathing apparatus, and have a companion monitoring your back. Septic tank methane gas dangers may be devastating in minutes if not addressed. Damage sustained during installation: A fiberglass septic tank may sustain damage during installation, for example, if it is dropped or struck by heavy machinery while being installed. It is possible that the break and leak that resulted from this may not be noticed until the septic tank is pumped later in the year. Make that there are no missing drain plugs or that the effluent levels are abnormally low. If a fiberglass or other light-weight material septic tank is left empty after installation or after pumping, and if the septic tank is located in an area with wet soils or rising ground water, the tank may float up out of the ground, causing plumbing connections to be broken and the tank itself to be damaged.

Fiberglass or Plastic Septic Tank WarrantiesLife Expectancy

To learn more about the manufacturer’s warranty for a septic tank, start with the REFERENCESsection below. It is encouraged that you contribute. Continue reading atSEPTIC TANKS HOME MADE SITE BUILT, or choose a topic from the closely-related articles listed below, or see the completeARTICLE INDEX for further information. SEPTIC TANKS- a place of residence HOW TO FIND THE SEPTIC TANK PUMPING SCHEDULE FOR A SEPTIC TANK HYDRAULIC TANK SAFETY THE SIZE OF A SEPTIC TANK

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Concrete vs Plastic Septic Tanks: Which is Better?

The septic tank on your property is one of the most important components of the whole plumbing system on your property. Septic tanks are designed to safely handle and manage all of the wastewater generated by your property. If your septic tank is not operating properly, you should replace or repair it as soon as possible. It is possible that your septic tank is not operating properly, causing your entire plumbing system to be interrupted. This might result in you placing yourself and your family in risk, as well as causing damage to your home or garden.

  1. There is a good probability that you will be replacing your present septic system with a new one within a few years.
  2. This is due to the fact that the septic tank you select will be used to service your plumbing system in the future.
  3. Septic tanks made of sorplastic.
  4. Knowing their advantages and disadvantages will assist you in selecting the one that best matches your needs and fits inside your budget.
See also:  How Close Can You Park Near A Septic Tank? (Solution found)

Plastic Septic Tanks


  • The purchasing price of plastic septic tanks is less expensive than that of concrete septic tanks
  • Thus, they are more cheap. Plastic septic tanks are simple to install since they are lightweight
  • They take just a small number of people to complete the job and require little time and equipment. As a result, installation costs are reduced. Poly septic tanks are lightweight and versatile, making them ideal for travel. This implies that they may be placed in a variety of locations. Plastic septic tanks are waterproof and impervious to corrosion caused by water-based substances. Additionally, they are rust-resistant. Plastic tanks are less prone to cracking than cement tanks because plastic is more flexible than cement
  • As a result, a plastic septic tank does not break as often as a cement septic tank It is more sanitary to use polyethylene septic tanks than than cement tanks
  • Plastic tanks are delivered fully assembled and ready to be fitted.


  • Plastic tanks are not as durable as concrete and are quickly crushed by the weight of the container. Alternatively, they might be crushed by the weight of thick dirt or by vehicles passing over the areas where they are buried. Plastic tanks are also susceptible to the environment, which means that they might burst or crack as a result of changes in soil vibrations and environmental conditions, among other things. Solid-waste disposal systems made of cement, on the other hand, are significantly less responsive to environmental changes. Plastic septic tanks are more susceptible to deterioration than cement septic tanks because they break or wrap more frequently. In comparison to cement septic tanks, plastic tanks require more care to keep them operating properly. Concrete tanks have a longer lifespan than poly septic tanks
  • Nevertheless, they are less durable. In most cases, plastic tanks have low effluent levels and will “float” if the water level in the tank is greater than typical. This “floating” can cause extensive damage to your plumbing system as well as the septic tank itself. Plastic septic tanks are not authorized for use in all states
  • However, in certain areas they are.

Possibly of interest to you is this article: Should you buy a property with a septic system?

Concrete Septic Tanks


  • Cement septic tanks outlast plastic tanks in terms of durability and, if maintained properly, may survive for a lengthy period of time. In the right circumstances, with regular draining and good maintenance, a cement septic tank can endure up to 40 years or more. Cement septic tanks are resistant to changes in the environment, such as tree roots or shifting soil conditions. Concrete tanks are not adversely affected by the weight that is placed on top of them. Comparing cement septic tanks to plastic septic tanks, cement tanks are far more durable and require little maintenance. The fact that concrete tanks are highly hefty and contain large effluent levels means that they are impervious to “floating.” There are no restrictions on using cement tanks in the United States
  • They are permitted in every state.


  • Concrete septic tanks are more expensive to purchase and install than plastic septic tanks, mostly due to the weight of the concrete tanks. Concrete tanks are more difficult to carry and install than plastic tanks due to the fact that they are awkward and more big in comparison. Therefore, the cementseptic tank installation necessitates the use of heavy equipment and requires a significant amount of time. Cement tanks are also more difficult to repair and install than other types of tanks. As your cement tank is broken, it is more difficult to repair it efficiently when compared to plastic tanks. Compared to plastic tanks, cement septic tanks are more prone to corrosion due to the fact that they fracture or corrode as the tanks age, particularly if they are not properly maintained.

Selecting a Septic Tank

For many homeowners in Atlanta, GA, cement is the go-to material since it is permitted in all 50 states in the United States, including Georgia. It has been a long time since cement has been the preferred building material due of its resistance to damage caused by shifting or heaviness. Plastic septic tanks, on the other hand, are less expensive than concrete septic tanks when it comes to cost comparison. It is recommended that you use a plastic tank when you live in a distant place since cement tanks cannot compete with the simplicity with which it can be installed and transported.

Septic tanks made of cement are not recommended for use in areas with significant acidity in the soil.

Despite the fact that there are several aspects to consider when deciding between a plastic and a cement septic tank, examine your location and scenario and choose the choice that feels best for your property.

We are experts in both concrete and plastic septic tanks, and we will guide you through the process of selecting the best solution for your house. For all of your septic tank system requirements, contact The Original Plumber.

Fiberglass Septic Tanks

When comparing fiberglass septic tanks to plastic septic tanks, we, as a provider of fiberglass septic tanks, have our own observations. When it comes to fiberglass septic tank pricing, it is obvious that it is well worth the investment because fiberglass does not flex when compared to plastic. Even while the cost of fiberglass septic tanks is slightly greater than that of plastic septic tanks, it is well worth it in order to prevent the problem of bending or distortion, especially if the groundwater table is higher than the tank’s base, since groundwater pressures can be extremely high.

Fiberglass septic tank installation will be noticeable for its sturdiness and the fact that it will not deform.

Septic tanks made of fiberglass are commonly found in residential structures.

SMC Septic Tank
Type(m³) Size(㎜) Volume(m³) Thickness(㎜) Weight(㎏)
0.5 700 x 1280 0.5 3.2 30
0.8 880 ×1534 0.8 3.3 36
1 900 x 1640 1 4 50
1.5 1100 × 1600 1.5 4 55
2 1200 x 1900 2 4 84
2 1200 x 1900 2 7 120

The Size

There are several different sizes of fiberglass septic tanks, ranging from 750 gallon to 10000 gallon. The 1000 gallon fiberglass septic tank is the most popular choice among consumers for domestic usage. Everything is dependent on how much is consumed. Septic tanks of greater capacity are required for commercial enterprises such as hotels, as well as public facilities such as hospitals and schools.

The Style

Fiberglass septic tanks are delivered in waterproof containers, preventing any groundwater from leaking in. It has a maximum burial depth of 4 feet and may be installed to that depth.

The Price

In certain circumstances, this is the time of year when other businesses opt to utilize concrete instead. Although the costs of a fiberglass septic tank and a concrete septic tank are different, the cost is important. In comparison to concrete, the lifespan of a fiberglass septic tank is noticeably shorter, but it is still fairly priced when taking into account the durability of the tank. It is the perfect time to purchase a fiberglass septic tank, especially during the period when they are on sale.

The Durability

Fiberglass septic tank manufacturers put themselves in the shoes of their customers to understand their needs. This is why, after seeing failures of septic tanks built of other materials, this invention became a reality. Placing a fiberglass septic tank within a concrete inclusion will result in improved performance over the course of time. Because concrete is not waterproof, and fiberglass is an impermeable material composition, a complete waterproofing and resistance to deformation will be obtained using this material composition method.

The Maintenance

Taking on fiberglass septic tank repair may be of less concern because this product is rarely proven to have any defects, even when used for an extended period of time. According to the manufacturer, fiberglass has the ability to withstand distortion and cracking, which are two undesirable effects that should be avoided. The principle of the FRP septic tank is followed. According to this theory, waste particle discharge mixed with liquid and sediment closed anaerobic fermentation, ammonification, liquefaction, biological antagonism and other processes such as mosquito breeding control are used to achieve the goal of excrement detoxification through the removal and disinfection of germs and bacteria as well as through the control of mosquito breeding.

Sediment Precipitation Area

On the domestic sedimentation, the most significant substance that sinks into the bottom sediment treatment of fiberglass septic tanks is sewage from the domestic sedimentation. It settles to the bottom of the water column while being over-layered with the water surface above it. A very active microbial population has been developed to destroy the complicated structure of refractory organic materials, allowing it to be dissolved more readily.


In order to enhance the retention duration of wastewater in a pool, the owner must ensure that the DC water is generated into a circulating water stream during the installation of a fiberglass septic tank. In this method, the sewage in the pool and sedimentation sludge will be in touch for a longer period of time, resulting in the production of more microorganisms, which will aid in the digestion of the sewage.

Filter Processing Area

We, the fiberglass septic tank makers, have created a tank that is distinct in both appearance and function since it incorporates innovative biofilm treatment technology that is now in use both domestically and internationally. After a time of culture, a large number of microorganisms reproduce on the surface of the filter, resulting in the formation of a biofilm contact. Microorganisms degrade organic stuff in sewage by preventing it from decomposing, adsorbing it, and decomposing it further.

  1. Area of sedimentation and precipitation Septic tank divider made of fiberglass Area for filter processing Extremely Strong Refrain from distorting.
  2. For a long service life, it should be non-corrosive.
  3. Installation is made simple by the lightweight design.
  4. The building was constructed in accordance with the criteria of the Uniform Plumbing Code

Fiberglass septic tank installation

A fiberglass septic tank can be constructed with a gravel backfill or a concrete inclusion to provide a complete solution. Some fiberglass septic tank manufacturers want to do a wet pit test prior to installing their tanks. In this test, the tank will be buried in gravel, and the water will be pumped out into the gravel to increase the pressure of the groundwater. If it passes the test, the results will reveal which tank has the best overall performance. However, for reputable manufacturers such as ourselves, our goods already have their own set of criteria that demonstrate to our customers that they are receiving high-quality tank performance.

  • Installation of this magnitude will take no more than 1-2 days.
  • Septic tank made of fiberglass, 1710 x 965 mm.
  • Fiberglass septic tank installation meets the demands of consumers who are searching for an alternative septic tank to concrete septic tanks that is also sturdy enough to endure longer than a plastic septic tank installation.
  • Food, medical, textiles, chemicals, electricity, metallurgy, manufacturing, petroleum, and construction are examples of industries.
  • Septic tank constructed of fiberglass put behind the home The installation of a fiberglass septic tank a fiberglass septic tank that is in good condition Shipping will arrive earlier than anticipated on the scheduled date of delivery.
  • It is possible to transport it unassembled and nested with other pieces.
  • The fiberglass septic tanks we provide to our customers are of the highest quality.
  • A 25-year guarantee is provided on the lifespan of a fiberglass septic tank.
  • If you are considering purchasing a tank, a fiberglass septic tank would be an excellent choice since it provides excellent overall performance in terms of keeping discharge from your household or from your business contained.
  • We just wish to assist others in selecting the most appropriate goods and therefore saving them both time and money.

The performance and durability of a septic tank are quite important, which is why purchasing a fiberglass septic tank is highly recommended. If you have any questions or concerns about your fiberglass septic tank, please contact us via email.

Plastic vs. Concrete Septic Tanks

It is one of the most crucial components of the complete plumbing system that your septic tank is installed in. Septic tanks are designed to securely handle and treat all of the waste water that you generate. If your septic tank ceases to function, you must have it fixed or replaced as soon as possible. Septic system failures can cause extensive damage to your home’s plumbing system, as well as to your yard and property. They can even put you in danger! Unfortunately, septic tanks are not built to last a lifetime.

The installation of a new septic tank is a major undertaking.

Making the selection on what material to use for your new septic tank will be one of your most significant considerations.

Here are the advantages and disadvantages of each.

Plastic Septic Tanks

  • Plastic septic tanks are less expensive to purchase and install than concrete septic tanks
  • They are also more environmentally friendly. Easy to carry: Because plastic is significantly lighter than concrete, plastic septic tanks are less difficult to transport to your residence
  • Installation is less difficult: In contrast to concrete septic tanks, installing plastic septic tanks does not necessitate the use of heavy machinery. Also available are plastic septic tanks, which may be installed in a wider range of settings. Inhibition of corrosion by water: Plastic septic tanks are entirely impervious to water-based corrosion. Exceptionally fracture resistant: Because plastic is more flexible than concrete, plastic septic tanks do not crack nearly as frequently as concrete tanks.


  • Plastic tanks are not nearly as durable as concrete tanks and are therefore crushable. It is possible that they will be crushed under the weight of the dirt. Plastic tanks have been known to burst when vehicles drive over the regions where they were buried in the ground. Plastic tanks are sensitive to the environment and may burst or rupture as a result of changes in soil conditions or vibrations in the vicinity. Concrete tanks, on the other hand, are far less vulnerable to environmental degradation. Damage is a possibility because: Plastic septic tanks are more prone to breaking or warping than concrete septic tanks for a variety of reasons, including: Plastic tanks may require significantly more care than their concrete equivalents
  • However, this is not always the case. Concretized septic tanks tend to have a longer lifespan than their nonconcrete counterparts, however this is not always the case.
See also:  What Cant I Find The Lid On My Septic Tank? (Question)

Concrete Septic Tanks

  • Concrete septic tanks are far more robust than their plastic equivalents
  • They are also less expensive. Exceptionally long-lasting: Concrete tanks can survive for hundreds of years. An untreated concrete septic tank can live for up to 40 years if it is properly maintained and regularly drained. Concrete septic tanks are often not influenced by changes in their surrounding environment, such as shifting soil conditions, the growth of tree roots, or any other difficulties that may arise. Driving over the soil where a concrete tank has been buried will have no effect on it
  • Yet, Septic tanks made of concrete are less prone to failure than those made of plastic since they are more durable.


  • Expenses that are higher: Construction of concrete septic tanks is more expensive than the installation of plastic septic tanks. Installation is more challenging in the following cases: Due to the fact that concrete is heavier and more unwieldy than plastic, installation will take longer and will necessitate the use of heavy equipment. Because concrete tanks are not as resistant to corrosion as plastic tanks, they may ultimately corrode or break as the tanks age. This is more likely to occur if they are not adequately maintained. When it comes to repair, the following is more disruptive: If your concrete septic tank is broken, it might be difficult to repair it effectively, especially when compared to plastic tanks.

The following options are available when it comes time to select a new septic tank: Both types of tanks have their advantages, so the decision comes down to which one you believe would work best for your house and budget. Concrete tanks are more robust, but they are also more expensive, whilst plastic tanks are less expensive, but they are also more delicate. For any more information regarding septic tank installation, please do not hesitate to contact The Pink Plumber at your convenience. We can install both plastic and concrete septic tanks, and we can assist you in determining which is the best option for your needs and budget.

4 Types of Septic Tanks – HomeAdvisor

The characteristics of each type of septic tank are crucial to understand whether you’re deciding which type of tank to use in conjunction with your septic system or solving a problem with your existing tank. Each installation option has its own set of pros and limitations, just like any other installation. Knowing the relative advantages and disadvantages of each option will assist you in making the right selection while establishing, repairing, or replacing your septic tank. Please keep in mind that most of these issues are the consequence of improper septic maintenance or installation.

The cost of an inspection might vary significantly based on a variety of criteria.

  • If you’re attempting to figure out what sort of septic tank to put in with your septic system or if you’re troubleshooting your present tank, it’s crucial to understand the differences between the various types of tanks. The pros and cons of each installation method are the same as for any other. When it comes to installing, repairing, or replacing your septic tank, being aware of the respective advantages and disadvantages will help you make the best decision possible. Keep in mind that most of these issues are the consequence of improper septic maintenance or installation practices. To avoid or identify these problems before they become tragedies, you should get your tank examined on a regular basis. Depending on a variety of criteria, the cost of an inspection might vary. Consult with a professional to obtain an exact estimate of the cost of a sewage tank check.
  • In spite of the fact that plastic septic tanks are more resistant to the chemical processes that occur naturally in a septic system, their lower weight makes them more prone to structural damage. It is necessary to install the tank with care in order to avoid damage to the tank. It is important to take careful notice of the land above the tank. Avoid driving any vehicles over the tank’s filling station. During periods of wet soil, the lighter can also cause the tank to shift in its position in the ground. Occasionally, a plastic septic tank may emerge from the earth, destroying pipes along the way.
  • Using oxygen to help in the degradation of the effluent is what aerobic septic tanks are all about, according to the manufacturer. They also necessitate the use of power. When a septic system fails, aerobic septic tanks are most frequently utilized to replace it. They can also, on occasion, minimize the amount of space necessary for their drain field. Aerobic septic tanks are generally two to three times more expensive than conventional septic tanks, but their high efficiency can result in significant savings in terms of reclaimed land in the drain field and a longer tank life. The capacity of an aerobic septic tank to function has nothing to do with its long-term dependability. A more regular and more thorough maintenance schedule is required for an aerobic septic system. Because of its more intricate breakdown structure, there is a greater possibility that something may go wrong. However, if the system is properly maintained, its effectiveness will allow you to keep your effluent under control for an almost unlimited period of time.
  • Important Caution: Exercise extra caution when in the vicinity of open or uncovered sewage tanks. Falling into a sewage tank will almost always result in death due to asphyxiation. The simple act of leaning over a septic tank might lead you to pass out.

Our True Cost Report gathers information from homeowners on the expenses of small and big capacity septic systems. Use this resource while planning your installation project’s financial budget.

Concrete vs Plastic Septic Tank: Which One is Better?

Plastic and concrete are two extremely flexible building materials that have helped to form the world in which we live.

A multitude of infrastructural systems, including sewage, rely on them for their continued operation. But which is more appropriate for your requirements: a concrete or a plastic septic tank?

Concrete vs Plastic Septic Tank

You don’t have a connection to the municipal sewage system at your residence? This necessitates the use of a dependable and long-lasting solution for trash collection and treatment. Wastewater must be channeled into a septic tank, where it can be purified before being discharged into the surrounding ground. It is possible to construct the tank from a range of materials, the most typical of which are concrete and plastic. In this post, we will examine the differences between the two types of septic tanks in terms of quality, convenience, and cost.

Following your study of this essay, you should be able to choose which option is most appropriate for your family or business.

What is a septic tank?

A septic tank is a waterproof chamber that collects wastewater from a residence or a commercial establishment. It is not a full-fledged septic system, but rather a partial water treatment system. Solids collect in the bottom of a septic tank as a result of settling and anaerobic processes, while organics rise to the top as a result of aerobic activities. The reasonably clean effluent is either discharged into the environment or carried to a treatment facility through a pipe system. The sludge must be pumped out on a regular basis and disposed of in the proper manner.

Septic tanks are utilized in regions where there is no access to municipal sewers, such as rural areas.

  • It is a basic technology that anybody can use without needing to be an expert
  • It does not require the usage of electrical energy
  • And it can be constructed using readily accessible materials. It is constructed underneath and does not occupy any space in your yard
  • With an extended service life and minimal running expenses

However, there are certain disadvantages to utilizing a septic tank, including the following:

  • It is necessary to guarantee frequent desludging
  • In flood-prone locations, this product is not recommended
  • A risky and unpleasant task, manual septic tank cleaning is. Both effluent and sludge require further treatment in order to avoid environmental impact. Septic tanks must be vented in order to assure the regulated release of smells and possibly harmful gases
  • Otherwise, they would overflow.

Advantages of concrete septic tanks

One of the advantages of septic tanks is that they may be constructed using materials that are readily available in the local area. Such a material as concrete is available, and it may be employed in a variety of climates and situations with outstanding results. The following are some of the advantages of utilizing a concrete septic tank: Concrete sewage tanks outlast plastic septic tanks by orders of magnitude. What is the lifespan of concrete septic tanks? They may live for up to 40 years if they are properly maintained.

It is safe to drive over the land where a concrete tank was buried without fear of it cracking or crumbling.

The effluent level of a concrete septic tank is greater than that of a plastic septic tank.

Because of their superior performance, they are approved in all 50 states.

Disadvantages of concrete septic tanks

Even though concrete septic tanks are quite durable, they can have a few disadvantages: When compared to a plastic septic tank, a concrete septic tank is more expensive to acquire and install. Construction of concrete is time-consuming and necessitates the use of heavy equipment because of its weight. If you decide on a 1000-gallon concrete septic tank, transportation and installation will not be straightforward jobs to do. Another concern associated with the construction of concrete septic tanks is the fact that they require additional lining.

  1. A concrete tank might be more difficult to repair than a plastic one, depending on its construction.
  2. If you opt to get a high-quality 1000-gallon concrete septic tank, it is recommended that you choose a premium model.
  3. In the absence of sufficient maintenance, a concrete tank will eventually collapse.
  4. Untreated water will leak into the earth, where it may contaminate groundwater supplies.

Advantages of plastic septic tanks

Plastic septic tanks are becoming increasingly popular among households and businesses for a variety of reasons, including the following: Plastic septic tanks may be built in practically any area without the need for heavy equipment. They are also quite affordable. It goes without saying that plastic is far lighter than concrete and is therefore more convenient to transport to your home. Water corrosion, which is the most common issue with concrete septic tanks, is not a concern with plastic septic tanks.

Disadvantages of plastic septic tanks

Plastic exists in a variety of colors, forms, and sizes, and it may have a negative connotation at times. There are several issues that might arise when septic tanks are used. Because plastic is not as strong as concrete, it is susceptible to being crushed by the weight of the surrounding earth. You’ll also want to avoid driving over an area where a plastic tank has been buried, for safety reasons. In contrast to concrete tanks, which are not subject to environmental changes, the situation with plastic tanks is rather different.

In contrast to concrete tanks, which are not subject to environmental changes, plastic tanks are more susceptible.

Compared to plastic tanks, concrete tanks have a somewhat longer lifespan.

Groundwater may get contaminated when it is exposed to the atmosphere.

You should check with your local government to see if plastic septic tanks are permitted in your area. Before acquiring and installing one, make sure you are aware of any applicable restrictions in your area.

What about fiberglass septic tanks?

Fiberglass septic tanks are a unique form of tank that offers a number of significant advantages, including:

  • Because they weigh less than concrete tanks and are simple to build, they may be used anyplace. Fiberglass, in contrast to plastic, does not flex as a result of groundwater pressures. With a fiberglass septic tank, you can prevent problems like bending inwards, limited volume, and lids that no longer fit properly. Unlike their plastic equivalents, fiberglass tanks are frequently covered by an extended warranty.

For the reasons stated above, fiberglass is a preferable choice to plastic since it avoids all of the concerns connected with it. It’s common for people to confuse fiberglass with another form of plastic, but there is a distinction between the two materials. Fiberglass is an inorganic material, whereas plastic is an organic material. Fibreglass is a reinforced material made consisting of glass fibers embedded in a resin matrix that has outstanding mechanical and electrical qualities.

The Verdict

It is hard to establish a broad comparison between a concrete septic tank and a plastic septic tank. It would be unfair to state that one material is superior to another when each material has its own set of advantages and disadvantages. However, if you are considering purchasing a plastic septic tank, we recommend that you pay close attention to the quality of the tank. The most costly error you can make is to purchase a low-cost tank composed of a low-density polyethylene or other low-cost material.

  • Even though a plastic tank appears to be sturdy when it is purchased, the situation is very different after it has been installed.
  • That water cannot be moved; instead, it is held in place by the weight of the earth that lies above it.
  • The advantages and cons of plastic septic tanks are moot if the plastic has not been thoroughly tested for its ability to resist subsurface pressures.
  • Water may infiltrate through concrete and deform the tank regardless of how well it is constructed.
  • Unless you have the ability to construct a watertight chamber for the plastic tank, it is recommended that you purchase the highest quality septic tank you can afford.

So, when it comes to the concrete vs plastic septic tank debate, the winner is a third type.

In terms of convenience, the fiberglass tank is comparable to the plastic tank, but it is far more durable.

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